The European Commission activity in this area includes:Developing an open data portal site for any type of information held by the Commission and other EU institutions and bodies. The Open Data Portal containing data from Commission services and from the European Environment Agency went live in December 2012. The portal is entirely built using open source solutions: the LAMP software bundle, the Drupal content management system and CKAN, the data catalogue software developed by the Open Knowledge Foundation. Its metadata catalogue is built on the basis of the Dublin Core, the data catalogue vocabulary DCAT and theasset description metadata schema ADMS.Working with EU Member States on data formats and interoperability between existing open data portal sites at State, regional or local level. The Commission wants to increase public access to high-value, machine-readable data sets generated by European, national & regional governments and public administrations. However, such data sets are found in several, diverse locations, which makes it difficult for people to find them. The Commission funds the "LOD2 - Creating Knowledge out of Interlinked Data" project, which develpoed a prototype pan-European search portal, publicdata.eu. This harvests metadata information from existing open data portal sites in Europe and makes them searchable through a multi-lingual user interface.Contracting services to support data holding entities wishing to publish data on an open data portal, providing technical assistance on data preparation, transformation and publication and related training and IT advisory services. Online training material can be found here.Funding "Linked Open Data Around the Clock" (LATC), a project working on the publishing and usage of linked data on the Web. This has included the conversion of a large number of data sets from the European institutions into linked data and interlinking the data sets with one another, making it easier to answer questions that simultaneously depend on independently developed data resources.